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Issue 28, 2017
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New stimulus-responsive shape-memory polyurethanes capable of UV light-triggered deformation, hydrogen bond-mediated fixation, and thermal-induced recovery

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Abstract

Shape-memory polymers (SMPs) have been rapidly developed in recent decades because they can be fixed in deformed shapes and their original shapes can be recovered by applying an external stimulus. There is an urgent need for SMPs that can deform spontaneously upon an external stimulus. Light acts as a remote and clean stimulus for inducing changes in shape, but light-based deformations cannot be fixed under ambient conditions. Here, we report a novel stimulus-responsive SMP that is capable of shape deformation under UV light and shape fixation in visible light. Finally, the original shape is recovered at higher temperature. This work expands the current understanding of the inherent staging-responsive features in both light- and thermal-induced SMPs, illuminating a new mechanism of staging-responsive shape-memory effects.

Graphical abstract: New stimulus-responsive shape-memory polyurethanes capable of UV light-triggered deformation, hydrogen bond-mediated fixation, and thermal-induced recovery

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Publication details

The article was received on 23 May 2017, accepted on 26 Jun 2017 and first published on 26 Jun 2017


Article type: Communication
DOI: 10.1039/C7TA04463A
Citation: J. Mater. Chem. A, 2017,5, 14514-14518
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    New stimulus-responsive shape-memory polyurethanes capable of UV light-triggered deformation, hydrogen bond-mediated fixation, and thermal-induced recovery

    J. Ban, L. Mu, J. Yang, S. Chen and H. Zhuo, J. Mater. Chem. A, 2017, 5, 14514
    DOI: 10.1039/C7TA04463A

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